Use the body of your email as your cover letter and only attach your resume Attach your cover letter to the email. That email should include a short introduction, and state you’re applying for the job and have attached your cover letter and resume
How do you say you have attached a resume in an email?
How do you say your resume is attached?
Should I attach my cover letter and resume together?
You should generally opt for sending your cover letter and resume as separate documents, except when submission guidelines require a single document. Since they serve two very different roles in the job search process, they should be treated as separate documents.